參數(shù)資料
型號(hào)： EM91455BP
廠商： ELAN Microelctronics Corp .
英文描述： TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
中文描述： 音頻/脈沖撥號(hào)與LCD接口及IPP檢測(cè)功能
文件頁(yè)數(shù)： 4/24頁(yè)
文件大?。?/td> 199K
代理商： EM91455BP
EM91455 SERIES
TONE/PULSE DIALER WITH LCD INTERFACE
AND I.P.P. DETECT FUNCTION
4
* This specification are subject to be changed without notice.
9.24.1998
Symbol
Function
HKS
Control signal inputs pin that is corresponding hook switch status. When handset was
left from cradle, this pin must be connected to “Low” level to operate all functions.
Otherwise, this pin must be connected to “High” level to disable all function and
prevent power consumption.
Pulse signal outputs pin that is NMOS open-drain output structure. Normally, this pin
stays “High impedance” level. In Pulse dialing mode and keypad was entry. This pin
will output pulse trains signal that is corresponding to keyboard 0 .. 9 keys.
Hold function output that is CMOS structure.Normally, this pin stays “Low” level.
When Hold function is executing, this pin will output “High” level. This pin is
designed to drive LED or peripheral circuit to indicate line is at Hold status.
SDO function output that is NMOS open-drain structure. When there is a valid entry
on keyboard, this pin will output a serial data. This serial data is designed to drive LCD
driver to display dialing number on LCD screen or drive voice synthesizer to announce
dialing number to speaker.
The ring signal detect input pin.
While the Tel-ring is incoming, this pin must be connected to “Low” with delay to
indicate the ringing . Otherwise, this pin must be connected to “High” level .
Ring mute output pin that is NMOS open-drain structure. The RMUTE pin is
designed to control microphone of handset to prevent the illegal dialing from pocket
dialer. If the DRING pin is at “High” level , then Off-Hook or turn on Handfree , this
pin will output “Low” level. In other words, the DRING pin is used to check the phone
that receives an incoming call (DRING =Low input) or make an outgoing call
(DRING= High input) . If the phone user make an outgoing call ,then RMUTE pin
activated to prevent the illegal dialing from pocket dialer in the particular application.
The RMUTE can be restored to “High” level when the first key entry is not the
optioned lock-number .
No connection.
PO
HDO
SDO
DRING
RMUTE
NC
相關(guān)PDF資料
PDF描述
EM91455C IC XTAL CLK 0SC 16.0 MHZHYBRID +/-.01%
EM91455CK TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
EM91455D TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
EM91455DK TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
EM91455 Tone/Pulse Switchable Dialer with LCD Interface and I.P.P. Detect Function(雙音/脈沖可轉(zhuǎn)換撥號(hào)器（帶液晶顯示接口和盜撥檢測(cè)功能）)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EM91455C 制造商:EMC 制造商全稱(chēng):ELAN Microelectronics Corp 功能描述:TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
EM91455CK 制造商:EMC 制造商全稱(chēng):ELAN Microelectronics Corp 功能描述:TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
EM91455D 制造商:EMC 制造商全稱(chēng):ELAN Microelectronics Corp 功能描述:TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
EM91455DK 制造商:EMC 制造商全稱(chēng):ELAN Microelectronics Corp 功能描述:TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
EM91465 制造商:EMC 制造商全稱(chēng):ELAN Microelectronics Corp 功能描述:TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
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